Research On Heterogeneous Spectrum Auction With Differential Privacy

In recent years,radio technology has had a profound impact on people’s lives,where spectrum resources have a pivotal role in the popular development of radio technology.In traditional radio spectrum allocation,local governments allocate specific frequency bands to authorized users under license.These spectrum allocations are usually long-term,and any changes are made under the strict guidance of government agencies.However,as the wireless network system continues to grow larger,the available spectrum resources have become difficult to meet the growing demand for wireless communications.To alleviate the problem of inefficient spectrum allocation,some experts and scholars have proposed auction-based spectrum allocation schemes.However,most of these schemes are dedicated to improving the revenue and efficiency of spectrum auctions,while ignoring the privacy leakage problem of auction participants.Some schemes based on differential privacy protection consider the privacy leakage problem and are dedicated to protecting users’ location information,concentrating on solving the privacy problem of homogeneous spectrum auctions,with little research on the privacy protection problem of heterogeneous spectrum allocation.To this end,this thesis focuses on a heterogeneous spectrum allocation mechanism based on differential privacy protection,with the following main work:(1)A single-side heterogeneous spectrum allocation method with differential privacy protection is proposed.Aiming at the existing single-side heterogeneous spectrum auctions with low privacy protection and allocation efficiency,this thesis uses the idea of combining differential privacy and spectrum allocation strategy to combine single-side heterogeneous spectrum auctions with exponential mechanism pricing selection,and achieves efficient and secure allocation of spectrum through reasonable grouping and pricing algorithms.And the efficiency and security of the scheme are proved in terms of both economic efficiency and security.The scheme has obvious privacy protection advantages compared with existing schemes.The scheme has also been proven to be highly profitable through a series of simulation experiments.(2)A double heterogeneous spectrum allocation scheme with differential privacy protection is proposed.Unlike single-side auctions where there is only one seller,double auctions allow multiple sellers to participate in the auction at the same time.Therefore,double auctions have stronger market universality.To further adapt to the complex spectrum trading market,a double auction heterogeneous spectrum allocation scheme is designed in this thesis.To address the problems of insufficient privacy protection and low economic efficiency of existing double heterogeneous spectrum auctions,this scheme combines differential privacy with spectrum allocation and uses an indexing mechanism to select the final pricing,which satisfies the honesty of the auction.And it achieves privacy protection for both buyers and sellers while minimizing the loss of economic efficiency.